1.\" $OpenBSD: mpath.4,v 1.2 2009/08/09 17:57:43 jmc Exp $ 2.\" 3.\" Copyright (c) 2009 David Gwynne <dlg@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: August 9 2009 $ 18.Dt MPATH 4 19.Os 20.Sh NAME 21.Nm mpath 22.Nd SCSI multipath 23.Sh SYNOPSIS 24.Cd "mpath0 at root" 25.Cd "scsibus* at mpath?" 26.Sh DESCRIPTION 27.Nm 28intercepts the attachment of devices on physical SCSI buses 29that could be available via several paths. 30These devices are then presented via the 31.Xr scsibus 4 32attached to 33.Nm . 34.Sh SEE ALSO 35.Xr ioctl 2 , 36.Xr intro 4 , 37.Xr scsi 4 38.Sh HISTORY 39The 40.Nm 41driver first appeared in 42.Ox 4.7 . 43.Sh AUTHORS 44.An David Gwynne Aq dlg@openbsd.org . 45